US Patent 9533286 Sinter resistant catalytic material and process of producing the same

A catalytic material including particles formed of a catalytic core material having a thermally resistant porous shell coated over the catalytic core material. An oxygen storage material is dispersed within the thermally resistant porous shell. In an example, the oxygen storage material is ceria. The catalytic material can further include a catalytic support, wherein the particles are deposited on the catalytic support. The catalytic support can be a powdered oxide including a material selected from the group consisting of alumina, silica, zirconia, niobia, ceria, titania, and combinations thereof. The catalytic core can include an element selected from the group consisting of Pt, Pd, Rh, Co, Ni, Mn, Cu, Fe, Au, Ag, and combinations thereof. The porous shell can be selected from materials consisting of alumina, baria, ceria, magnesia, niobia, silica, titania, yttria, and combinations thereof.